Using the JPEG2000 image format for storage and access in biodiversity collections.
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Using the JPEG2000 image format for storage and access in biodiversity collections.

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Using the JPEG2000 image format for storage and access in biodiversity collections. Using the JPEG2000 image format for storage and access in biodiversity collections. Presentation Transcript

  • Using the JPEG2000 image format for storage and access in biodiversity collections. Chris Freeland Missouri Botanical Garden
  • Overview of JPEG2000
    • Wavelet-based compression
      • Different than JPEG
      • Decompress without extracting entire file
    • Proposed in 2000 to supercede JPEG
      • Hasn’t
    • Slow adoption in museums & libraries
      • Poor (no) native browser support
      • Few open source options
    • Faster adoption in medical imaging, other commercial applications
  • Parts of the format
    • Part 1 , Core coding system (JP2)
      • defines format; adopted as standard first.
    • Part 2 , Extensions
    • Part 3 , Motion JPEG 2000
    • Part 4 , Conformance
    • Part 5 , Reference software
    • Part 6 , Compound image file format (JPM)
    • Part 7 has been abandoned
    • Part 8 , Security (JPSEC)
    • Part 9 , Protocols and API (JPIP)
    • Part 10 , JP3D ( volumetric imaging )
    • Part 11 , JPWL ( wireless applications )
    • Part 12 , ISO Base Media File Format ( common w/ MPEG-4 )
  • Advantages of JPEG2000
    • Region extraction
    • Compression
      • Both lossless & lossy
    • Self-containedness
      • XML metadata + image
      • Multiple objects can be bundled together
    • Progressive Transmission
      • Lower quality at early load
    http://www.dlib.org/dlib/september08/chute/09chute.html
  • Region Extraction “ Give me x , y coordinates at z resolution.” 600ppi, 200MB TIF; encode to 100MB JP2 72ppi: 20KB JPG
  • “ How many books in a ___?”
    • 2 Biblioburros; 4,800 books*
    *http://www.nytimes.com/2008/10/20/world/americas/20burro.html Luis Soriano, with Alpha and Beto
      • 1 Biblioburro = 2,400 books
      • BHL to date = 9 Biblioburros!
  • Storage requirement for a digital Biblioburro
    • 2,400 books / Biblioburro
      • (9,238,295 pages / 22,118 books in BHL) = 418 pages / book
      • 1,002,437 pages / Biblioburro
    • Avg size of each image file
      • RAW/TIF: 24MB ; JP2: 2MB
    • Drive space needed / Biblioburro
      • TIF: 24TB ; JP2: 2TB
    2,400 books 24 TB TIFs 2 TB JP2 = =
  • Self-containedness / metadata bundling
    • Not just an image, but an image, its content & its context
      • Adobe XMP
      • Dublin Core
      • Your own XML
        • TIF Headers & JPEG limit fields
    • Can describe more than just an image
      • A whole web site
  • Barriers for adoption
    • Lack of affordable, scalable serving options
      • Until recently, no open source server
      • Commercial options expensive
    • No native browser support
      • Safari does , but via QuickTime
      • But why??
        • PNG?
        • No motivation?
    • Community skepticism
  • Encoding Software
    • Commercial
      • Adobe Photoshop
      • LuraTech SDK
      • LizardTech
    • Non-Commercial
      • Kakadu
      • ImageMagik
      • IrfanView
  • Decoding & Serving
    • Commercial
      • LizardTech
      • Aware
      • LuraTech ICS
      • FSIV
    • Non-Commercial
      • Kakadu
      • GSIV
      • djatoka
  • Part 6: JPIP
    • Protocol and API for transmitting JP2
    • Designed for HTTP, but not restricted to that carrier
      • Don’t need a browser
    • Implementations are available, use is infrequent
      • HiRISE camera on Mars Reconnaissance Orbiter
  • Current use of JP2 in BHL
    • Serve 85% (lossy) .jp2
    • LizardTech decoder
      • Tiled on the fly
      • Cached for performance
    • GSIV browser-based client viewer
  • LizardTech ExpressServer Browser GSIV.js www.biodiversitylibrary.org .jp2 .jpg Internet Archive /page/1274907 pageid: 1274907 BHLdb http://www.archive.org/download/mushroomsofameri00palm/.../mushroomsofameri00palm_0010.jp2 images.mobot.org A user requests Mushrooms of America, edible and poisonous , Plate X: http://www.biodiversitylibrary.org/page/1274907 locate:
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  • The Future: djatoka
    • Developed at Los Alamos National Laboratory, Research Library
    • Use of the ISO-standardized JPEG 2000 format [ 6 ] as the service format;
    • Java-based open source solution built around the Kakudu JPEG 2000 library;
    • Geared towards reuse through URI-addressability of all image disseminations including regions, rotations, and format transformations;
    • Provision of a consistent, guessable URI pattern for image disseminations based on the ANSI/NISO OpenURL standard [ 7 ];
    • Provision of an extensible service framework for image disseminations enabled by OCLC's Java OpenURL package ;
    • Availability of image disseminations in a range of image formats;
    • Availability of image disseminations for locally stored JPEG 2000 files, as well as for Web-accessible images in a variety of formats;
    • Configurable server-side, file-based caching;
    • Ajax-based client reference implementation, based on IIPImage JavaScript Viewer , which allows panning, zooming, and selecting the URI of the current view.
    http://www.dlib.org/dlib/september08/chute/09chute.html
  • References
    • djatoka
      • http://www.dlib.org/dlib/july08/buonora/07buonora.html
    • HUL: Page Image Compression for Mass Digitization
      • http:// preserve.harvard.edu/massdig/hul_study /
    • JP2 in Libraries and Archives
      • http://j2karclib.info/taxonomy/term/2
    • JPEG 2000 - a Practical Digital Preservation Standard?
      • http://www.dpconline.org/docs/reports/dpctw08-01.pdf
    • JPEG2000 site
      • http://www.jpeg.org/jpeg2000/
  • Contact
      • Chris Freeland
      • Missouri Botanical Garden
      • 4344 Shaw Blvd.
      • St. Louis, MO 63110
      • [email_address]
      • http://www.chrisfreeland.com